CN109094643A - A kind of fault alarm method and system of electric boosting steering system - Google Patents
A kind of fault alarm method and system of electric boosting steering system Download PDFInfo
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- CN109094643A CN109094643A CN201811151914.2A CN201811151914A CN109094643A CN 109094643 A CN109094643 A CN 109094643A CN 201811151914 A CN201811151914 A CN 201811151914A CN 109094643 A CN109094643 A CN 109094643A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Power Steering Mechanism (AREA)
Abstract
The present invention provides the fault alarm method and system of a kind of electric boosting steering system, this method comprises: EPS failure is classified, and establishes corresponding table of the EPS fault type with the characteristics of signals of EPS trouble light；After the engine started, battery voltage, engine speed, speed and motor feedback signals are obtained；Electric boosting steering system is judged with the presence or absence of current failure, if it is, determining the fault type of current failure according to the battery voltage, the engine speed, the speed and/or the motor feedback signals；It inquires the corresponding table and determines the characteristics of signals of the corresponding EPS trouble light of current failure, and control EPS trouble light and carry out flashing alarm by the characteristics of signals of setting.The present invention can improve the efficiency and convenience that user obtains fault message, increase safety and intelligence that vehicle uses.
Description
Technical field
The present invention relates to Automobile Failure Diagnosis Technology field more particularly to a kind of fault alarms of electric boosting steering system
Method and system.
Background technique
Automobile electric booster steering system (EPS) provides power-assisted by motor, have assist characteristic is variable, save the energy and
Advantages of simple structure and simple.EPS is mainly made of controller, torque sensor, assist motor, retarder, mechanical steering system etc..
As the control device of motor turning, the controller (EPS controller) of automobile electric booster steering system is mentioned in addition to controlling motor
Outside for the function of power steering, also than fault diagnosis functions must be provided simultaneously with, when system is abnormal, to make to drive
Member makes correct response, it is ensured that traffic safety.
Currently in order to inform that a convenience is often arranged in the malfunction of driver's steering system on the combination instrument of vehicle
The EPS trouble light of observation, as shown in Figure 1, EPS trouble light is connected by triode with the pin of the master chip of EPS controller,
When electric boosting steering system breaks down, the MCU of EPS controller can issue high level by corresponding pin, and EPS is controlled
Triode Q1 conducting in device, and then the light emitting diode (i.e. EPS trouble light) in instrument is driven to light.Driver can be observed
Electric boosting steering system trouble light on instrument board is in illuminating state, but can not learn specific failure mode and corresponding
Fault message.If electric boosting steering system does not have failure, the driving pin output of the MCU of steering controller is low level,
EPS trouble light is in OFF state.Currently employed trouble light lights carry out malfunction coefficient, not can know that specific failure mode
With corresponding fault message, needs to diagnose EPS controller by means of the diagnostic tool of profession, can just obtain specific failure
Summary of the invention
The present invention provides the fault alarm method and system of a kind of electric boosting steering system, solves existing electric boosted turn
It needs to diagnose EPS failure using the diagnostic tool of profession when to the system failure, and then obtains fault type and letter
Breath, it is when there are diagnostic fees and laborious, efficiency and convenience that user obtains fault message can be improved, increases vehicle and uses
Safety and intelligence.
In order to achieve the above object, the present invention the following technical schemes are provided:
A kind of fault alarm method of electric boosting steering system, comprising:
EPS failure is classified, and establishes corresponding table of the EPS fault type with the characteristics of signals of EPS trouble light；
After the engine started, battery voltage, engine speed, speed and motor feedback signals are obtained；
Electric boosting steering system is judged with the presence or absence of current failure, if it is, according to the battery voltage, described
Engine speed, the speed and/or the motor feedback signals determine the fault type of current failure；
It inquires the corresponding table and determines the characteristics of signals of the corresponding EPS trouble light of current failure, and control EPS trouble light and press
The characteristics of signals of setting carries out flashing alarm.
Preferably, further includes:
Powered in vehicle, and when engine speed is 0, judge EPS controller with the presence or absence of historical failure code, if
It is then to read historical failure code, and control EPS trouble light and light alarm, otherwise controls EPS trouble light and extinguish.
Preferably, further includes:
It is determined according to the control signal waveform that EPS fault setting EPS trouble light flashes, and according to the control signal waveform
Corresponding control signal dutyfactor；
It establishes EPS failure and controls the one-to-one relationship of signal dutyfactor, exist in electric boosting steering system current
When failure, corresponding control signal dutyfactor is exported according to the current failure.
Preferably, further includes:
The ratio section that the control signal dutyfactor is divided according to EPS fault type, makes each ratio section pair
Answer an EPS fault type；
In electric boosting steering system, there are control signal dutyfactors when current failure, exported according to EPS failure
Locating ratio section determines fault type and reports.
Preferably, further includes:
In electric boosting steering system there are when current failure, failure message is sent by CAN bus, vehicular meter according to
The failure message shows fault code and/or control EPS trouble light flashing alarm.
Preferably, the EPS fault type includes: torque sensor failure, electrical fault, controller failure, vehicle event
Barrier, engine failure, electric voltage exception failure.
The present invention also provides a kind of failure warning systems of electric boosting steering system characterized by comprising
Setting unit for EPS failure to be classified, and establishes the characteristics of signals of EPS fault type Yu EPS trouble light
Correspondence table, wherein the EPS fault type include: torque sensor failure, electrical fault, controller failure, vehicle therefore
Barrier, engine failure, electric voltage exception failure；
Acquiring unit, for after the engine started, obtaining battery voltage, engine speed, speed and motor feedback
Signal；
Judging unit, for judging electric boosting steering system with the presence or absence of current failure, if it is, according to the storage
Cell voltage, the engine speed, the speed and/or the motor feedback signals determine the fault type of current failure；
Light control unit determines the characteristics of signals of the corresponding EPS trouble light of current failure for inquiring the corresponding table,
And it controls EPS trouble light and carries out flashing alarm by the characteristics of signals of setting；
The light control unit is also used to power in vehicle, and engine speed be 0 when, whether judge EPS controller
There are historical failure codes, if it is, reading historical failure code, and control EPS trouble light and light alarm, otherwise control
EPS trouble light extinguishes.
Preferably, further includes:
PWM setting unit, the control signal waveform for being flashed according to EPS fault setting EPS trouble light, and according to described
Control signal waveform determines corresponding control signal dutyfactor；
Duty ratio control unit is helped for establishing EPS failure and controlling the one-to-one relationship of signal dutyfactor electronic
Power steering system exports corresponding control signal dutyfactor according to the current failure there are when current failure.
Preferably, further includes:
Ratio range restraint unit, for dividing the ratio section of the control signal dutyfactor according to EPS fault type,
Make the corresponding EPS fault type in each ratio section；And in electric boosting steering system there are when current failure, according to
Ratio section locating for the control signal dutyfactor of EPS failure output determines fault type and reports.
Preferably, further includes:
CAN bus unit, for, there are when current failure, sending failure by CAN bus in electric boosting steering system
Message, so that vehicular meter shows fault code and/or control EPS trouble light flashing alarm according to the failure message.
The present invention provides the fault alarm method and system of a kind of electric boosting steering system, by setting EPS failure with
The characteristics of signals of EPS trouble light corresponds to table, and in electric boosting steering system there are when current failure, control EPS trouble light control is set
Fixed signal characteristic flashes alarm.It solves to need the diagnostic tool ability using profession when existing electric boosting steering system failure
EPS failure is diagnosed, and then obtains fault type and information, it is when there are diagnostic fees and laborious, user can be improved
The efficiency and convenience of fault message are obtained, safety and intelligence that vehicle uses are increased.
Detailed description of the invention
In order to illustrate more clearly of specific embodiments of the present invention, attached drawing needed in the embodiment will be made below
Simply introduce.
Fig. 1: being the control schematic diagram of existing EPS trouble light；
Fig. 2: being a kind of fault alarm method flow chart of electric boosting steering system provided by the invention；
Fig. 3: being a kind of failure warning system structural schematic diagram of electric boosting steering system provided by the invention.
Specific embodiment
The scheme of embodiment in order to enable those skilled in the art to better understand the present invention with reference to the accompanying drawing and is implemented
Mode is described in further detail the embodiment of the present invention.
It breaks down for current electric boosting steering system and alarm is only lighted by EPS trouble light, need using dedicated
Tool, which carries out fault diagnosis, can just obtain fault type and fault message, there is a problem of time-consuming and laborious.The present invention provides one
The fault alarm method and system of kind electric boosting steering system, pass through the characteristics of signals pair that EPS failure and EPS trouble light is arranged
Table is answered, in electric boosting steering system there are when current failure, the signal characteristic of control EPS trouble light control setting flashes alarm.
It needs to examine EPS fault alarm using the diagnostic tool of profession when solving existing electric boosting steering system failure
It is disconnected, and then obtain fault type and information, it is when there are diagnostic fees and laborious, the effect that user obtains fault message can be improved
Rate and convenience increase safety and intelligence that vehicle uses.
As shown in Fig. 2, a kind of fault alarm method of electric boosting steering system, comprising:
S1: EPS failure is classified, and establishes corresponding table of the EPS fault type with the characteristics of signals of EPS trouble light；
S2: after the engine started, battery voltage, engine speed, speed and motor feedback signals are obtained；
S3: judge electric boosting steering system with the presence or absence of current failure, if it is, according to the battery voltage,
The engine speed, the speed and/or the motor feedback signals determine the fault type of current failure；
S4: the inquiry corresponding table determines the characteristics of signals of the corresponding EPS trouble light of current failure, and controls EPS failure
Lamp carries out flashing alarm by the characteristics of signals of setting.
Specifically, there are many types of EPS failure, according to the difference of influence the reason of breaking down and to system, EPS
Fault type can include: torque sensor failure, electrical fault, controller failure, complete vehicle fault, engine failure, voltage are different
Normal failure.After engine operation, EPS controller no longer exports the trouble light driving of expression system historical failure information at this time
Signal, but whether there is or not current failures according to system running environment, if system is in normal power-assisted steering without current failure
Operating mode, trouble light do not work.If system current failure is caused to occur for some reason at this time, EPS controller can root
According to the glittering EPS trouble light of corresponding failure mode.Driver only needs to reduce speed vehicle stops and (can not also stop in this way
Vehicle, parking are intended merely to facilitate observation trouble light flashing rule in the secure state) and engine operating state is kept, it reads
The corresponding glittering information of trouble light can determine whether which kind of fault mode is steering system be under.
This method further include: powered in vehicle, and when engine speed is 0, judge EPS controller with the presence or absence of history therefore
Hinder code, if it is, reading historical failure code, and control EPS trouble light and light alarm, otherwise controls EPS trouble light and put out
It goes out.
Specifically, after key powers on, engine also not running when, if EPS is in historical failure, EPS controller
It can read historical failure code, and generate corresponding trouble light driving signal, light EPS trouble light, EPS trouble light is lighted at this time
Information representation is historical failure information existing for EPS system；If there is no historical failure code, then EPS controller is not sent
Corresponding driving signal, EPS trouble light are in OFF state.
This method further include:
S5: the control signal waveform flashed according to EPS fault setting EPS trouble light, and according to the control signal waveform
Determine corresponding control signal dutyfactor；
S6: establishing EPS failure and controls the one-to-one relationship of signal dutyfactor, exists in electric boosting steering system and works as
When prior fault, corresponding control signal dutyfactor is exported according to the current failure.
Specifically, torque class failure, steering motor break down, EPS controller breaks down or vehicle class failure (such as
The failures such as engine speed, speed, battery voltage) when, the control signal waveform for the driving malfunction lamp that the MCU of EPS is issued
Characteristics of signals it is as shown in Table 1 and Table 2.In practical applications, " m long n is short " can be used and describe specific fault message, wherein m
To indicate the failure of major class, if m=1 indicates torque sensor class failure, m=4 then indicates vehicle environmental classes failure；N to
Indicate the subdivision group failure under major class failure, n=1 indicates that battery voltage is abnormal when such as m=4, and n=2 indicates that speed is abnormal.
It corresponds to EPS trouble light and flashes waveform, in order to facilitate observation of, the trouble light long bright duration is set as 1.5s, short bright holds
The continuous time is set as 0.5s.
Table 1
Table 2
It can be obtained from upper table, glittering information (be not necessarily to other extras) of the driver by merely look at trouble light in instrument
It can table look-up and know the specifying information or classification of the electric boosting steering system failure of its driven vehicle, and judge the failure
It is current failure or historical failure, driver is helped to screen the dangerous situation of vehicle, and plays and driver is reminded to drive with caution
The purpose of vehicle.
This method further include:
S7: the ratio section of the control signal dutyfactor is divided according to EPS fault type, makes each ratio section
A corresponding EPS fault type；
S8: in electric boosting steering system, there are control signal duties when current failure, exported according to EPS failure
Fault type is determined than locating ratio section and is reported.
It should be noted that control signal can be sent by EPS controller there are when failure in electric boosting steering system
The ratio section of duty ratio directly determines fault type, makes efficiency of fault diagnosis faster.
This method further include:
S9: in electric boosting steering system there are when current failure, failure message, vehicular meter are sent by CAN bus
Fault code and/or control EPS trouble light flashing alarm are shown according to the failure message.
As it can be seen that the present invention provides the fault alarm method and system of a kind of electric boosting steering system, pass through setting EPS event
Hinder table corresponding with the characteristics of signals of EPS trouble light, in electric boosting steering system there are when current failure, controls EPS trouble light
The signal characteristic of control setting flashes alarm.It solves to need the diagnostic tool using profession when existing electric boosting steering system failure
EPS fault alarm could be diagnosed, and then obtain fault type and information, when there are diagnostic fees and laborious, energy
Efficiency and convenience that user obtains fault message are improved, safety and intelligence that vehicle uses are increased.
As shown in figure 3, the present invention also provides a kind of failure warning systems of electric boosting steering system, comprising: setting is single
Member for EPS failure to be classified, and establishes corresponding table of the EPS fault type with the characteristics of signals of EPS trouble light, wherein
The EPS fault type includes: torque sensor failure, electrical fault, controller failure, complete vehicle fault, engine failure, electricity
Press abnormal failure.Acquiring unit, for after the engine started, it is anti-to obtain battery voltage, engine speed, speed and motor
Feedback signal.Judging unit, for judging electric boosting steering system with the presence or absence of current failure, if it is, according to the storage
Cell voltage, the engine speed, the speed and/or the motor feedback signals determine the fault type of current failure.
Light control unit determines the characteristics of signals of the corresponding EPS trouble light of current failure for inquiring the corresponding table, and controls
EPS trouble light carries out flashing alarm by the characteristics of signals of setting.The light control unit is also used to power in vehicle, and
When engine speed is 0, judge that EPS controller whether there is historical failure code, if it is, historical failure code is read,
And control EPS trouble light and light alarm, it otherwise controls EPS trouble light and extinguishes.
The system further include: PWM setting unit, the control signal wave for being flashed according to EPS fault setting EPS trouble light
Shape, and corresponding control signal dutyfactor is determined according to the control signal waveform.Duty ratio control unit, for establishing EPS
The one-to-one relationship of failure and control signal dutyfactor, in electric boosting steering system there are when current failure, according to described
Current failure exports corresponding control signal dutyfactor.
The system further include: ratio range restraint unit, for dividing the control signal duty according to EPS fault type
The ratio section of ratio makes the corresponding EPS fault type in each ratio section；And exists in electric boosting steering system and work as
When prior fault, according to EPS failure output the control signal dutyfactor locating for ratio section come determine fault type and on
Report.
The system further include: CAN bus unit, for, there are when current failure, passing through CAN in electric boosting steering system
Bus sends failure message, so that vehicular meter shows that fault code and/or control EPS trouble light are dodged according to the failure message
Bright alarm.
As it can be seen that the present invention provides the fault alarm method and system of a kind of electric boosting steering system, pass through setting EPS event
Hinder table corresponding with the characteristics of signals of EPS trouble light, in electric boosting steering system there are when current failure, controls EPS trouble light
The signal characteristic of control setting flashes alarm.It solves to need the diagnostic tool using profession when existing electric boosting steering system failure
EPS fault alarm could be diagnosed, and then obtain fault type and information, when there are diagnostic fees and laborious, energy
Efficiency and convenience that user obtains fault message are improved, safety and intelligence that vehicle uses are increased.
Structure, feature and effect of the invention, the above institute is described in detail according to diagrammatically shown embodiment above
Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention
Think made change or equivalent example modified to equivalent change, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (10)
1. a kind of fault alarm method of electric boosting steering system characterized by comprising
EPS failure is classified, and establishes corresponding table of the EPS fault type with the characteristics of signals of EPS trouble light；
After the engine started, battery voltage, engine speed, speed and motor feedback signals are obtained；
Electric boosting steering system is judged with the presence or absence of current failure, if it is, according to the battery voltage, described starting
Machine revolving speed, the speed and/or the motor feedback signals determine the fault type of current failure；
It inquires the corresponding table and determines the characteristics of signals of the corresponding EPS trouble light of current failure, and control EPS trouble light by setting
The characteristics of signals carry out flashing alarm.
2. the fault alarm method of electric boosting steering system according to claim 1, which is characterized in that further include:
Powered in vehicle, and when engine speed is 0, judge EPS controller with the presence or absence of historical failure code, if it is,
Historical failure code is read, and controls EPS trouble light and lights alarm, EPS trouble light is otherwise controlled and extinguishes.
3. the fault alarm method of electric boosting steering system according to claim 1, which is characterized in that further include:
According to the control signal waveform that EPS fault setting EPS trouble light flashes, and is determined and corresponded to according to the control signal waveform
Control signal dutyfactor；
It establishes EPS failure and controls the one-to-one relationship of signal dutyfactor, there are current failures in electric boosting steering system
When, corresponding control signal dutyfactor is exported according to the current failure.
4. the fault alarm method of electric boosting steering system according to claim 3, which is characterized in that further include:
The ratio section that the control signal dutyfactor is divided according to EPS fault type makes each ratio section corresponding one
A EPS fault type；
In electric boosting steering system, there are locating for control signal dutyfactor when current failure, exported according to EPS failure
Ratio section determine fault type and report.
5. the fault alarm method of electric boosting steering system according to claim 4, which is characterized in that further include:
In electric boosting steering system there are when current failure, failure message is sent by CAN bus, vehicular meter is according to
Failure message shows fault code and/or control EPS trouble light flashing alarm.
6. the fault alarm method of electric boosting steering system according to any one of claims 1 to 5, which is characterized in that
The EPS fault type includes: torque sensor failure, electrical fault, controller failure, complete vehicle fault, engine failure, electricity
Press abnormal failure.
7. a kind of failure warning system of electric boosting steering system characterized by comprising
Setting unit for EPS failure to be classified, and establishes pair of the characteristics of signals of EPS fault type and EPS trouble light
Answer table, wherein the EPS fault type includes: torque sensor failure, electrical fault, controller failure, complete vehicle fault, hair
Motivation failure, electric voltage exception failure；
Acquiring unit, for after the engine started, obtaining battery voltage, engine speed, speed and motor feedback signals；
Judging unit, for judging electric boosting steering system with the presence or absence of current failure, if it is, according to the battery
Voltage, the engine speed, the speed and/or the motor feedback signals determine the fault type of current failure；
Light control unit determines the characteristics of signals of the corresponding EPS trouble light of current failure for inquiring the corresponding table, and controls
EPS trouble light processed carries out flashing alarm by the characteristics of signals of setting；
The light control unit is also used to power in vehicle, and engine speed be 0 when, judge that EPS controller whether there is
Historical failure code if it is, reading historical failure code, and controls EPS trouble light and lights alarm, otherwise controls EPS event
Hinder lamp to extinguish.
8. the failure warning system of electric boosting steering system according to claim 7, which is characterized in that further include:
PWM setting unit, the control signal waveform for being flashed according to EPS fault setting EPS trouble light, and according to the control
Signal waveform determines corresponding control signal dutyfactor；
Duty ratio control unit, for establishing EPS failure and controlling the one-to-one relationship of signal dutyfactor, at electric boosted turn
To system there are when current failure, corresponding control signal dutyfactor is exported according to the current failure.
9. the failure warning system of electric boosting steering system according to claim 8, which is characterized in that further include:
Ratio range restraint unit makes every for dividing the ratio section of the control signal dutyfactor according to EPS fault type
A corresponding EPS fault type in the ratio section；And in electric boosting steering system there are when current failure, according to EPS
Ratio section locating for the control signal dutyfactor of failure output determines fault type and reports.
10. the failure warning system of electric boosting steering system according to claim 9, which is characterized in that further include:
CAN bus unit, for, there are when current failure, sending failure message by CAN bus in electric boosting steering system,
So that vehicular meter shows fault code and/or control EPS trouble light flashing alarm according to the failure message.
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| CN201811151914.2A CN109094643A (en) | 2018-09-29 | 2018-09-29 | A kind of fault alarm method and system of electric boosting steering system |
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| CN201811151914.2A CN109094643A (en) | 2018-09-29 | 2018-09-29 | A kind of fault alarm method and system of electric boosting steering system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111619667A (en) * | 2020-06-03 | 2020-09-04 | 中国第一汽车股份有限公司 | Vehicle control method and device and vehicle |
| CN111901683A (en) * | 2020-07-24 | 2020-11-06 | 海信视像科技股份有限公司 | Fault warning information display method and display equipment |
| CN113415339A (en) * | 2021-07-28 | 2021-09-21 | 岚图汽车科技有限公司 | Electric power steering control method and device and electronic equipment |
| CN114228825A (en) * | 2021-12-27 | 2022-03-25 | 天津德科智控股份有限公司 | Electric power steering control system and method |
| CN115009354A (en) * | 2022-06-16 | 2022-09-06 | 上汽通用五菱汽车股份有限公司 | Fault diagnosis method and device for vehicle steering system, vehicle and storage medium |
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| CN115009354A (en) * | 2022-06-16 | 2022-09-06 | 上汽通用五菱汽车股份有限公司 | Fault diagnosis method and device for vehicle steering system, vehicle and storage medium |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181228 |